And yesterday the Duchess of Cambridge received more visitors when her family arrived at the hospital where she has been a Very Important Patient since Monday.

Her sister, Pippa, and younger brother James, joined Prince William at her bedside yesterday. The Middletons arrived at the hospital in central London in a taxi at 3.45pm and hurried inside without saying a word to reporters.

Scroll down for video, edited prank call audio and the edited transcript

Quick visit: James, 25, and Pippa Middleton, 29, were pictured leaving the King Edward VII Hospital in central London just over an hour after arriving to see Kate

Carole Middleton leaves the King Edward VII hospital where her daughter Catherine, Duchess of Cambridge is being treated

They
said: ‘We were very surprised that our call was put through. We thought
we'd be hung up on as soon as they heard our terrible accents. We're
very sorry if we've caused any issues.’

St James's Palace declined to
comment. But Dickie Arbiter, the Queen’s former Press Secretary who
worked at Buckingham Palace for 12 years, told MailOnline: ‘This is a
shocking breach of security.

‘The Royal Family have been clients
of the King Edward VII Hospital for many, many years and it simply
beggars belief that a member of the public could call up and obtain
details of the Duchess’s medical condition in this way.

Outside: The media work near the King Edward VII Hospital where the Duchess of Cambridge is being treated

Brother and sister: James (left) and Pippa Middleton (right), pictured last month at the O2 Arena in London

'Where on earth were the checks and
balances? The hospital will be livid at what has happened and I am sure
the palace will be demanding answers. There will be fireworks over this,
for sure.'

Kate was said to be feeling better yesterday, but will continue to receive treatment for the next few days. She
has been on a drip in hospital after being admitted on Monday with
acute morning sickness.

St James’s Palace said on Tuesday:
‘The Duchess of Cambridge is continuing to feel better. She and the Duke
are immensely grateful for the good wishes they have received.

Presenters: Australian DJs Mel Greig (left) and Michael
Christian (right) were told that the Duchess was about to be 'freshened
up', with a nurse saying: 'She's sleeping at the moment and she has had
an uneventful night'

‘She will remain in hospital at present and will continue to be treated for hyperemesis gravidarum.’

In
spite of William’s obvious concern, the couple may be forced to spend
the first months of Kate’s pregnancy apart if her medical condition does
not improve, MailOnline understands.

The
condition that the Duchess, who is believed to be eight weeks pregnant,
has been diagnosed with can last for the first five months of pregnancy
- sometimes even for the entire duration.

Intrusion: Prank callers tricked a nurse into revealing information about the condition of Kate (seen last week)

Emma Rossi, a spokesman for the
Australian Communications and Media Authority, which regulates
broadcasters, told MailOnline: 'We are not aware of having received a
complaint, but privacy is an issue that we take seriously.'

She
said the normal procedure would be for someone to make a complaint to
the broadcaster first. If the complainant wasn't happy with the
response, then the ACMA would launch its own probe.

However,
sources in Australia say the prank call to the Duchess's hospital could
be deemed serious enough to trigger an immediate probe by ACMA, known
as a section 180.

The Care Quality Commission, which
monitors whether hospitals are meeting national standards, said it has
been informed of the incident.

Listen to MailOnline's edited version of the prank call to Kate

VIDEO: Pippa and James Middleton depart after visiting sister

VIDEO: William leaves hospital after spending the day with Kate

CHURCH OF ENGLAND PUBLISHES SPECIAL PRAYER FOR WILLSAND KATE

A prayer for the Duke and Duchess of Cambridge has been published by the Church of England today.

It is available on the Church’s website for its 16,000 churches to use in Sunday services, or for individuals in the privacy of their own home.

Kate is in the early stages of pregnancy and is being treated for severe morning sickness at a private London hospital.

'We pray for William, Duke of Cambridge and Catherine, Duchess of Cambridge as they prepare to receive the gift of their child'

Church of England prayer

Part of the prayer reads: ‘We pray for William, Duke of Cambridge and Catherine, Duchess of Cambridge as they prepare to receive the gift of their child.’

A Church of England spokesman said: ‘If there is an issue in the news like a natural disaster or something that concerns people we will compose a prayer or adapt one.’

The prayer was heavily adapted from an existing one by the Church’s national worship adviser, the Rev Christopher Woods.

It reads: ‘God our creator, we thank you for the wonder of new life and for the mystery of human love. We pray for William, Duke of Cambridge and Catherine, Duchess of Cambridge as they prepare to receive the gift of their child.

‘We thank you that we are known to you by name and loved by you from all eternity, through Jesus Christ our Lord. Amen.’

Christian: ‘If this has worked it is the easiest prank call we have ever made. Your accent sucked by the way, I just want you to know’

[Both laughing]

Greig: ‘I’m not used to playing old an 80-year-old’

MEL GREIG: A 'BUNDLE OF LAUGHS' WHO ENJOYS BEING MISCHIEVOUS

Blonde Mel Greig, 30, is said to be a ‘bundle of laughs’ who enjoys being mischievous.

She
started working at the radio station two years ago after five years
experience in commercial radio. She ran her own radio school from her
home town Adelaide, before that, but became known to Australia for a
stint on The Amazing Race TV show.

Before
she left Adelaide she risked the wrath of her Australian rules
footballer boyfriend Steven Pollock when she jokingly suggested that
when she got to Melbourne she hoped to fulfil her dream of licking
chocolate syrup off the stomach of R&B singer Usher.

She is also well known as an MC, having hosted fashion events, modelling camps and award nights.

Michael Christian - also known as an ‘MC’ but only because of his initials - was previously a presenter on a Melbourne TV station.

When he was picked to join 2DayFM he said he couldn’t wait to join Greig in the studio.

Richard Shears

[Phone picked up]

Greig: ‘Kate, my darling. Are you there?’

Nurse: ‘Good morning ma’am, this is the nurse speaking, how may I help you?’

Greig: ‘I’m just after my granddaughter Kate. I want to see how her little tummy bug is going?’

Nurse: ‘She’s sleeping at the moment and she has had an uneventful night. And sleep is good for her. She's been given some fluids [part removed due to patient confidentiality]. She's stable at the moment.'

[Part removed due to patient confidentiality]

Greig:
’I’ll just feed my little corgis then. When is a good time to come and
visit her, because I’m the Queen and I need a lift down there?’

[In background: Mummy, mummy]

‘Charles! When can you take me to the hospital, Charles?’

Christian: ‘When will it be alright to come down and see her? Maybe in the morning or something if that’s OK?’

Nurse:
‘I would suggest that any time after nine o’clock would be suitable
because the doctor will be in in the morning and will just be getting
her freshened up. I would think any time after nine.’

Christian: ‘Is Wills still there or has he gone home? I haven’t spoken to him yet.’

Nurse: ‘He went home probably at about nine o’clock last night, to be fair.’

Christian: ‘Lovely, but are they all ok? Everything is alright?’

Nurse: [Removed due to confidentiality]

Christian: ‘Of course, it’s hardly the palace is it?’

Greig: ‘ It’s nothing like the palace, is it Charles? When are you going to walk those bloody corgis?’

Christian: ‘Mumsy, I’ll go and take the dogs outside’

Greig: ‘I need to go visit Kate in the morning. My dear, thank you so much’